On 11/25/2011 01:24 PM, Benjamin Herrenschmidt wrote: > On Fri, 2011-11-18 at 09:22 +0100, Joakim Tjernlund wrote: > >> I forgot to ask, oprofile mentions setting -no-omit-framepointer to get >> correct backtrace but I cannot turn on frame pointers for the ppc kernel. >> Isn't frame pointers needed for pcc? what about user space? > PowerPC always has frame pointers, ignore that :-) Recently I have met a similar problem on frame pointer but at arm_v7 variant in back tracing support for Oprofile, could you help me see it? thanks in advance: in my case, I have enabled Oprofile support in my arm_v7 thumb2 target, in the created binary image including kernel image and rootfs, seems that frame pointer is not enabled for arm thumb2, So I have met the following problems in back trace: I can get the right stack traces for kernel stack, but for user stack, the stack length is always one depth, why?
Is this a known deficiency in supporting arm thumb2 for Oprofile stack trace? Thanks. B.R. --David > Cheers, > Ben. > > > > ------------------------------------------------------------------------------ > All the data continuously generated in your IT infrastructure > contains a definitive record of customers, application performance, > security threats, fraudulent activity, and more. Splunk takes this > data and makes sense of it. IT sense. And common sense. > http://p.sf.net/sfu/splunk-novd2d > _______________________________________________ > oprofile-list mailing list > oprofile-l...@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/oprofile-list _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev